Glycidol — workplace exposure limit
What is the pel (ppm) for Glycidol — workplace exposure limit?
For Glycidol, pel (ppm) is 50; pel (mg/m³) is 150; cas no. is 556-52-5, verified against its source on 2026-08-05.
Glycidol | 556-52-5 | 50 | 150 | - |
— osha.gov, retrieved 2026-08-05
50
The most of this substance workplace air may legally contain, averaged over an 8-hour shift — OSHA's permissible exposure limit (PEL), in parts per million, from the agency's own table row quoted below. Where federal OSHA and Cal/OSHA disagree, both limits are stated, each with its own agency's table row as evidence. NIOSH's number, where there is one, is shown separately: it is a recommended limit, not a legal one, and it is often the strictest of the three.
- Substance
- Glycidol verified
- CAS No.
- 556-52-5 verified
- PEL (ppm)
- 50 verified
- PEL (mg/m³)
- 150 verified
- NIOSH REL (ppm)
- TWA 25 per cdc.gov
- NIOSH REL (mg/m³)
- 75 per cdc.gov
What cdc.gov says
NIOSH REL TWA 25 ppm (75 mg/m3)
— cdc.gov, retrieved 2026-09-08